live-config generates extra output on user-setup boot hook while boot

[Baurzhan Muftakhidinov <baurthefirst@gmail.com>]

Hi, folks

This is what I've got from fresh build live cd boot process

==== begin of output from live-config log===========
 hostname user-setupUsage: grpck [options] [group [gshadow]]

Options:
  -h, --help                    display this help message and exit
  -r, --read-only               display errors and warnings
                                but do not change files
  -R, --root CHROOT_DIR         directory to chroot into
  -s, --sort                    sort entries by UID

 sudo locales tzdata lightdm xinit keyboard-configuration sysv-rc
initramfs-tools kde-services policykit util-linux login xserver-xorg

====end of log=================

the kernel command line was

BOOT_IMAGE=(loop)/live/vmlinuz isofrom=/dev/sdb1/binary-hybrid.iso
boot=live config locales=kk_KZ.UTF-8 keyb=en hostname=debian
username=kazsid quiet nottyautologin

Nothing special there, actually. Booting from USB drive, using the
isofrom option.

live packages were

live-boot	3.0~a25-1
live-boot-initramfs-tools	3.0~a25-1
live-config	3.0~a32-1
live-config-sysvinit	3.0~a32-1

Thanks,